donaldson



llNirn JOHN H. DONALDSON, OF GORE, OHIO.

PLOW.

' sPncIr-icA'rIoiv forming part of Letters Patent No. 373,131, dated November is, 1887. Application filed September 26, 1887. Serial No. 250,671. (No model.)

To all whom it may concern:

Be it known that I, J OHN H. DONALDSON, a citizen of the United States, residing at Gore,- in the county of Hocking and State of Ohio, have invented a certain new and useful Improvement in Plows, of which the following is a specification.

My invention relates to the improvement of riding-plows, and has particular relation to sod-breaking plows.

The objects of my invention are to so construct a plowof this character as to admit of the plowshare being readily and easily elevated from the ground; to provide for lowering the share in such manner as to cause it to .readily engage with the earth, and to provide for locking the same at the desired depth be- I low the surface of the ground; to so construct and arrange the parts of the plow as to prevent the wheels from running on the plowed ground; to provide means for leveling the ground and turning. away obstacles from the path of the plowshare and wheel, and to so form the tongue and connect the same with the frame of the plow as to elevate it to the proper height. These objects I accomplish in the mannerillustrated in the accompanying drawings, in which Figure 1 is a side elevation. of my improved plow. Fig. 2 is aplan view of the same. Fig. '3 is a front view; and Fig. 4 is a detail view in perspective, showing the connection of the front plowshare-elevating bar and front plowarm.

Similarletters refer to similar parts throughout the several views.

A represents the platform of the plow-carriage, having its rear portion bolted or otherwise secured to the central portion of an axle, B, and having projecting therefrom above its bearings on the axle a metallic seat-arm, 12, supporting a seat, b.

Orepresents the tongue, having its rear portion secured to the platform in any desirable manner, and which, projecting forwardly, is provided with an upward bend in front of one side of the platform, and is thence continued forwardly, as shown. To the front side of the upwardly-bent portion ofthe tongue is adapted to be attached the dou'bletree.

Mounted on the spindles of the axle B, one

on each side of the platform, are wheels D. Fixed on the projecting end of one of the spindles,at a point adjacent to the outer side of one of the wheels D, is a beam, E, which, extending forwardly a short distance, is continued in the form of a downwardlycurving arm, e, to a point slightly above the ground bearing line of the wheels. The lower end of this arm 6 is slotted and has pivoted within said slot a small guide-roller, f. Made to project forwardly from the lower end of the arm e is a pilot-block, said block being slotted from the rear to form two rearwardly-projecting arms, which are bolted or otherwise secured to opposite sides of thesaid arm 6, and having its front portion formed wedge shape, as shown. The beam E from the point of its connection with the axle-spindle is provided with a rearwardly-extending curved and slotted arm, 6, said arm having in its upper side, on each side of its central slot, a series of notches, 6 H represents the plowshare, located beneath the beam E in such manner that when in position for use its point is slightly in front of an imaginary vertical line drawn through the hub of the wheels. The upper and front portion of the plowshare is provided with a forwardly-projecting arm, h, which may be securedin the position or formed with the share. The front portion of the share-arm is pivoted within the end of a slotted lifting-bar, h, the latter having its front end formed solid and having the front arm, 6, of the beam E extending loosely through its central slot adjoining said solid end. The forward movement of the bar h is limited by a bolt, 1, held by a nut, t, and made to extend transversely through said bar in rear of the arm 6.

K represents a lever-arm having its lower end pivoted to one or both sides of the beam. This lever extends upwardly, and has projecting from its rear side, slightly below its handle is, a locking-rod handle, it, to the rear portion of which is pivotally connected the upper end of a locking-rod, k This locking-rod extends downwardly along the rear side of the lever, and, passing through a suitable keeper, made to project from the lever, is adapted to rest, as hereinafter described, in the desired one of a number of notches, 6 formed in the upper side of the beam E, said notched portion of the beam being raised slightly in the form of an arc of a circle. In order to hold the locking-rod normally in one of said notches, a small spring of any suitable form may be made to bear between the locking-rod handle and lever-handle, as shown. Any well-known form of lever-spring locking-rod maybe used, however,without altering the purpose or charactor of my invention.

L represents a connectingrod having its ends secured to lugs made to project, respectively, from the outer end of the bar 71/ and the front side of the lever is.

Secured by bolts or otherwise to the inner side of the plowshare H, near its rear end, is the lower end of an upwardly and slightly rearwardly extending lever-arm, M, which, passing through the slot of the arm 0, is provided, as described for the lever K, with a suitable spring locking-rod, m, the lower end of which normally rests within one of the notches 0 A cross-bar, N, is made to extend between and connect the platform A and beam E at a point in front of one of the wheels D. From the center of this crosspiece is made to depend, in front of the wheel, a guard-plate, n, the rearwardly and inwardly curved front side of which faces to the front obliquely.

By the construction above described it will be seen that the point of the plowshare may be elevated from the ground by pressing forward on the locking-rod handlek, thus raising and thereby releasing it from its seat in one L of the notches c and pulling the lever K the desired distance to the rear and allowing the spring-actuated locking-rod to drop into one of the rear notches c. A similar operation of the lever ill and its rod on will cause the rear portion of the plow to be likewise raised.

\Vhen it is desired to begin plowing, the point of the plow may be lowered to gain a hold in the earth, alter which the rear portion may be likewise lowered. It will be observed that the pilot or guard block 9 will tend to level the track of the roller-wheel f and plowshare H, while the obliquely-set guard-plate n will turn stone and other obstacles to one side out of the way of the wheel and plowshare. It will also be observed that the wheels of the carriage will not run on the plowed ground, the plowshare being on the outer side of one of the wheels.

Having now fully described my invention, what I claim, and desire to secure by Letters Patent, is-

1. In a horse-plow, the combination of the carriage, having supported on one end of its axle the beam E, the latter having notches e and arm 0, and carrying the lever K, having spring locking-rod k, with the plowshare H, its arm 7L pivotally connected with the bar h, the latter being made to embrace the arm a of the beam, and being connected by rod L with the lever K, substantially as and for the purpose specified.

2. The combination of the plow-carriage, having supported on one end of its axle the beam E, the latter having slotted arms 0 and c, notches c and e", and carrying the lever K, having spring locking-rod with the plowshare H, its arm h pivotally connected with bar h, the latter being made to embrace the arm a, and being connected with the lever K by the rod L, the guide-roller g, pivoted as described, and the lever-arm M, passing through the slot of said arm a and having spring-aetuated locking-rod m, substantially as and for the purpose specified.

3. The combination of the plow-carriage, having platform A and bent tongue and carrying on the axle the beam E, the latter adjustably supporting, as described, the plowshare H, with the cross-bar N, from which depends the guardplate n, all arranged substantially as and for the purpose specified.

. JOHN H. DONALDSON.

\Vitnesses:

S. HAMBLETON,

L. BENTON TUSSING. 

